Reasons for performance issues

Performance is a complicated term that can include response time, the speed of data transmission, availability, and utilization of computer resources. First of all, we should remember that we develop software for users, and so we should concentrate on factors that affect their experience.

Different issues can influence overall system performance differently. In one case, we can have a slow rendering speed; in another case, the response time can be slow. Poor performance decreases productivity, damages the loyalty of customers, and costs the software industry millions of dollars annually. So it would be better to identify bottlenecks before they begin to have a negative influence on the user experience.

Today's customers have applications with legacy code that require upgrading throughputs and response time. Java is one of the most popular languages in the world. A lot of server-side mobile applications and software for SIM cards have been written in Java. But Java isn't a modern programming language. This is the main reason for the appearance of Kotlin. It allows you to write simpler and more reliable code. The fact that Kotlin can compile to the same bytecode as Java is why applications written in these different languages can have the same performance. That's why the question about migrating from Java to Kotlin is relevant nowadays, and developers should be prepared for it. We're going to uncover the main reasons for performance issues that relate to all applications that are based on the Java Virtual Machine (JVM) and consequently to Kotlin.